Word | Noun | Adjective | Verb | Adverb |
---|---|---|---|---|
heterostracan | Yes | No | No | No |
Heterostraci | Yes | No | No | No |
heterostracan (noun) | Heterostraci (noun) |
---|---|
extinct jawless fish with the anterior part of the body covered with bony plates; of the Silurian and Devonian | extinct group of armored jawless fishes or fish-like vertebrate; taxonomy is not clear |